/*
* arch/ppc64/kernel/pSeries_hvCall.S
*
- *
* This file contains the generic code to perform a call to the
* pSeries LPAR hypervisor.
* NOTE: this file will go away when we move to inline this work.
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
-#include <linux/sys.h>
-#include <asm/unistd.h>
-#include <asm/errno.h>
+#include <asm/hvcall.h>
#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/cache.h>
#include <asm/ppc_asm.h>
-/*
- * hcall interface to pSeries LPAR
- */
-#define HVSC .long 0x44000022
-
-/* long plpar_hcall(unsigned long opcode, R3
- unsigned long arg1, R4
- unsigned long arg2, R5
- unsigned long arg3, R6
- unsigned long arg4, R7
- unsigned long *out1, R8
- unsigned long *out2, R9
- unsigned long *out3); R10
- */
+#define STK_PARM(i) (48 + ((i)-3)*8)
.text
+
+/* long plpar_hcall(unsigned long opcode, R3
+ unsigned long arg1, R4
+ unsigned long arg2, R5
+ unsigned long arg3, R6
+ unsigned long arg4, R7
+ unsigned long *out1, R8
+ unsigned long *out2, R9
+ unsigned long *out3); R10
+ */
_GLOBAL(plpar_hcall)
+ HMT_MEDIUM
+
mfcr r0
- std r0,-8(r1)
- stdu r1,-32(r1)
- std r8,-8(r1) /* Save out ptrs. */
- std r9,-16(r1)
- std r10,-24(r1)
-
- HVSC /* invoke the hypervisor */
+ std r8,STK_PARM(r8)(r1) /* Save out ptrs */
+ std r9,STK_PARM(r9)(r1)
+ std r10,STK_PARM(r10)(r1)
+
+ stw r0,8(r1)
+
+ HVSC /* invoke the hypervisor */
+
+ lwz r0,8(r1)
- ld r10,-8(r1) /* Fetch r4-r7 ret args. */
- std r4,0(r10)
- ld r10,-16(r1)
- std r5,0(r10)
- ld r10,-24(r1)
- std r6,0(r10)
+ ld r8,STK_PARM(r8)(r1) /* Fetch r4-r6 ret args */
+ ld r9,STK_PARM(r9)(r1)
+ ld r10,STK_PARM(r10)(r1)
+ std r4,0(r8)
+ std r5,0(r9)
+ std r6,0(r10)
- ld r1,0(r1)
- ld r0,-8(r1)
mtcrf 0xff,r0
- blr /* return r3 = status */
+ blr /* return r3 = status */
/* Simple interface with no output values (other than status) */
_GLOBAL(plpar_hcall_norets)
+ HMT_MEDIUM
+
mfcr r0
- std r0,-8(r1)
- HVSC /* invoke the hypervisor */
- ld r0,-8(r1)
+ stw r0,8(r1)
+
+ HVSC /* invoke the hypervisor */
+
+ lwz r0,8(r1)
mtcrf 0xff,r0
- blr /* return r3 = status */
+ blr /* return r3 = status */
+
+
+/* long plpar_hcall_8arg_2ret(unsigned long opcode, R3
+ unsigned long arg1, R4
+ unsigned long arg2, R5
+ unsigned long arg3, R6
+ unsigned long arg4, R7
+ unsigned long arg5, R8
+ unsigned long arg6, R9
+ unsigned long arg7, R10
+ unsigned long arg8, 112(R1)
+ unsigned long *out1); 120(R1)
+ */
+_GLOBAL(plpar_hcall_8arg_2ret)
+ HMT_MEDIUM
+ mfcr r0
+ ld r11,STK_PARM(r11)(r1) /* put arg8 in R11 */
+ stw r0,8(r1)
-/* long plpar_hcall_8arg_2ret(unsigned long opcode, R3
- unsigned long arg1, R4
- unsigned long arg2, R5
- unsigned long arg3, R6
- unsigned long arg4, R7
- unsigned long arg5, R8
- unsigned long arg6, R9
- unsigned long arg7, R10
- unsigned long arg8, 112(R1)
- unsigned long *out1); 120(R1)
+ HVSC /* invoke the hypervisor */
+ lwz r0,8(r1)
+ ld r10,STK_PARM(r12)(r1) /* Fetch r4 ret arg */
+ std r4,0(r10)
+ mtcrf 0xff,r0
+ blr /* return r3 = status */
+
+
+/* long plpar_hcall_4out(unsigned long opcode, R3
+ unsigned long arg1, R4
+ unsigned long arg2, R5
+ unsigned long arg3, R6
+ unsigned long arg4, R7
+ unsigned long *out1, R8
+ unsigned long *out2, R9
+ unsigned long *out3, R10
+ unsigned long *out4); 112(R1)
*/
+_GLOBAL(plpar_hcall_4out)
+ HMT_MEDIUM
- .text
-_GLOBAL(plpar_hcall_8arg_2ret)
mfcr r0
+ stw r0,8(r1)
- ld r11, 112(r1) /* put arg8 and out1 in R11 and R12 */
- ld r12, 120(r1)
+ std r8,STK_PARM(r8)(r1) /* Save out ptrs */
+ std r9,STK_PARM(r9)(r1)
+ std r10,STK_PARM(r10)(r1)
- std r0,-8(r1)
- stdu r1,-32(r1)
+ HVSC /* invoke the hypervisor */
- std r12,-8(r1) /* Save out ptr */
-
- HVSC /* invoke the hypervisor */
+ lwz r0,8(r1)
- ld r10,-8(r1) /* Fetch r4 ret arg */
- std r4,0(r10)
+ ld r8,STK_PARM(r8)(r1) /* Fetch r4-r7 ret args */
+ ld r9,STK_PARM(r9)(r1)
+ ld r10,STK_PARM(r10)(r1)
+ ld r11,STK_PARM(r11)(r1)
+ std r4,0(r8)
+ std r5,0(r9)
+ std r6,0(r10)
+ std r7,0(r11)
- ld r1,0(r1)
- ld r0,-8(r1)
- mtcrf 0xff,r0
- blr /* return r3 = status */
-
-
-/* long plpar_hcall_4out(unsigned long opcode, R3
- unsigned long arg1, R4
- unsigned long arg2, R5
- unsigned long arg3, R6
- unsigned long arg4, R7
- unsigned long *out1, (r4) R8
- unsigned long *out2, (r5) R9
- unsigned long *out3, (r6) R10
- unsigned long *out4); (r7) 112(R1). From Parameter save area.
- */
-_GLOBAL(plpar_hcall_4out)
- mfcr r0
- std r0,-8(r1)
- ld r14,112(r1)
- stdu r1,-48(r1)
-
- std r8,32(r1) /* Save out ptrs. */
- std r9,24(r1)
- std r10,16(r1)
- std r14,8(r1)
-
- HVSC /* invoke the hypervisor */
-
- ld r14,32(r1) /* Fetch r4-r7 ret args. */
- std r4,0(r14)
- ld r14,24(r1)
- std r5,0(r14)
- ld r14,16(r1)
- std r6,0(r14)
- ld r14,8(r1)
- std r7,0(r14)
-
- ld r1,0(r1)
- ld r0,-8(r1)
mtcrf 0xff,r0
- blr /* return r3 = status */
+ blr /* return r3 = status */
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